About Us
ABOUT US
COMPANY PROFILE
Great Sequoia Corporation was established in 1978, and is engaged in export of industrial valves, lead free bronze fittings (NSF), red brass pipe nipples, hardware and air-tools. 

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Our Subsidiaries
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■ JY Valve & Mfg. CO., Ltd. (JY Valves)
  • 47years
    Company History
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A joint venture company with M.A. Stewart & Sons Ltd. of Canada engaged in the manufacturing of industrial valves. The primary business is producing the industrial valves to serve the oil industries and paper pulp industries in North America. Products includes threaded, welded and flanged steel valves. JY Valve & Mfg. CO., Ltd. located in China and has received ISO 9001 International Quality Assurance Certification, CRN registration, PED 97/23/EC certificate, API 607 Fire Safe certificate and CSA certificate. The management team has excellent experiences in Ball Valve manufacturing and machining process. We are confident to supply the superb quality ball valves and metal parts for our customers.
■ Ascent Vietnam International Trade and Investment Company Limited (Ascent)
A production base located in Bac Ninh Vietnam and specialized in producing and exporting the bronze fittings and brass castings. It has obtained ISO certificate and leadfree Certificate. 
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■ Applied Nano Technology Science, Inc. (ANTS)
Established in 2001 and located in Taiwan, is a company dedicating to specific
component manufacturing and technology research & development of vacuum and
nanotechnology applications and is mainly oriented to provide products and technical services to customers.
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